Calvin proves UFO's

Susie: Did you bring something for SHOW AND TELL?

Calvin : You Bet! I brought these charred rocks and ashes from my back yard. See? Dramatic proof that UFO's landed not a hundred feet from my house! Their retro rockets burned solid rock into this fragile gray dust cube!

Susie: This is an old charcoal briquette

Calvin: Even as we speak, aliens are undoubtedly infiltrating the highest levels of our government